Re: Backup From HotStandby
От | Rui DeSousa |
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Тема | Re: Backup From HotStandby |
Дата | |
Msg-id | 4BB72752-69DB-4ADA-A92F-4B7EE238A3EA@crazybean.net обсуждение исходный текст |
Ответ на | Re: Backup From HotStandby (Licio Matos <licio.matos@gmail.com>) |
Ответы |
Re: Backup From HotStandby
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Список | pgsql-admin |
On Aug 28, 2019, at 4:11 PM, Licio Matos <licio.matos@gmail.com> wrote:@Rui DeSousaI am running this on the primary, the question is if i can run this same script on the replica.
You can based on what you told me about the snapshot; however, the pg_start_backup() command will fail.
Note: What you are doing today most would consider it a “proper” online backup; when you start running the script on the replica then you will end up with a “crashed” backup. The “crashed” backup only works as you can guarantee a point in time atomic view of all the data files using a single atomic snapshot.
You need to remove the pg_start_backup() and pg_stop_backup() commands from the script. The backup should occur faster as it is no longer waiting on pg_start_backup() to issue checkpoint; however, that also means that recovery times increase for the same reason.
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